You should be ok. My truck
- top of bed sits at 60"
-and my hitch is 16& 3/4" tall from bed floor
-Bed is about 20" deep
-bed floor about 41" high at rear of bed
-top of 5th wheel is about 3 1/4" from top of bed.

Our last 5er sat front high so I dropped the trailer (or raised the pinbox) one set of holes. If I remember correctly that changes the height about 2" give or take 1/2"to 1"
Our truck sits about 2 3/4" higher in the rear (measured at center of wheel well) our dealer let us hook up to a sabre 34RLQS that has a listed pin weight of 1944 lb and it made the truck sit almost level. Our last trailer didn't squat the truck as much and it always pulled alittle nose high, but at a level I was comfortable with.